Improved tanning compound



UNITED STATES PATENT OFFICE.

J. W. TAYLOR, OF NORTH COLLINS, YORK.

IMPROVED TANNING COMPOUND.

Specification forming part of Letters Patent No. 44,234, dated September13, 1864.

To all whom it may concern.-

. Be it known that I-, J. W. TAYLOR, of North- Gollins, Erie county,State of New York, have invented a new Tanning Compound; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof.

The ingredients which I use to form my new compound are terra-japouica,sumac, and

alum. The proportions of these three ingredients are about forty partsof terra-japonica, ten parts of sumac, and one part of alum; but wherethe stock is very light a slightly larger quantity or proportion ofsumac is used.

The method of preparing these substances before mixing them together isto thoroughly dissolve the terra-japonica in hot water, and steep thesumac also in hot water until the tannin isliberated. The alum is alsodissolved in water, after which the three solutions are mixed togetherin a vat and the proper quantit; of water added.

For the first liquor, for, say, one hundred average skins, I take fortypounds of terrajaponica, ten pounds of sumac, and one pound of alum,treated as above, and put them into a vat with a suitable quantity ofwater. The skins, which have been prepared for the tanning process inthe usual manner, are put into the vat with the liquor and. handled in amanner common to tanning with bark-ooze. As

the tanning process progresses the liquor is strengthened from time totime, and the skins are allowed to remain in the liquor the usual timefor tanning with other substancesi. 0., there is nothing newin theprocess ofsirengthening up the liquor or handling the skins when mycompound is used.

As alum constitutes one of the essential elements of my compound, I willstate that caution must be observed in its use, as its otiiee is simplyto toughen the fiber of the hide, and il'more than I have specified isused (the proportions of the other ingredients being as above stated) itwill reappear upon the surface of the leather, which would beobjectionable.

While I prefer to use the three ingredients in the proportions hereinmentioned, I -do not limit myself to these proportions nor to deviatevery far therefrom.

Having thus described my invention, what I claim, and desire to secureby Letters Patent,

A tanning compound composed of the three ingredients prepared and mixedtogether in about the proportions herein specified.

JOSEPH \V. TAYLOR.

Witn esses HENRY K. BEVIER, M. HATHAWAY.

